3x2 – 6x3 + 6x4 + 4x5 = -5 %3D 3x1 – 7x2 + 8x3 – 5x4 + 8x5 = 9 b) Solve the linear system: 3 3x, – 9x, + 12x3 - 9 x4 + 6x5 = 15' = 15* | 2x2 – 4x3 + 4x4 + 2x5 = -6

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